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Motor Rotation Change, Strange Wiring?! Help!

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LondonBoards

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Hi dudes and dudette’s..

Get ready for the old ‘little bit of knowledge is a dangerous thing’…

Iv got a load of motors which we’re going to be scrapped, I saved them and mean to use them some day.. the first one I can use on my lathe, but I need to flip the direction of rotation.

Most motors Iv looked in before have 2 link bars and you flip them around to swap rotation, this motor has just 1 link bar. Iv thought about trying to flip it but feel I may melt something so best to ask.

If anyone could tell me how to do this, it would be greatly appreciated.
It would also be pretty awesome if I could somehow wire it to rotate either direction with the flick of a switch. Iv wired things like electric windows in cars using DTDP switches, is this viable if I get rid of the link bar and wire it instead? If I use a DTDP switch to control direction and have a separate on/off switch, would that be ok

It’s a 1940’s Myford lathe that I rescued from a scrap yard 10yrs ago, part way through restoring it, be great to finally get the thing running.

Iv also got a few other motors, one of which is quite interesting, I’ll make another thread for that when I get a minute to take some pics and workout what I’m doing with it.
 

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To try and clarify things, you should disconnect all the connections and measure the respective resistances of the winding connections., the caps appear in parallel, what values?
Make sure you keep a record of the wiring connections
 
It looks like someone has already swapped brown <> green? I'd guess that is the start winding?

I'd just take the two wires off U1, lower left.
I believe you will find one has continuity to U2 & is the start winding, and the other, run winding, has continuity to W1.

Reverse the start winding and it should run the opposite way?
 
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